This needs a pkgrel bump since libffi was updated.

The URL should also be changed to https.

It was something wrong with my environment. Apologies!

I was not able to reproduce the missing rpc.h build failure. I have successfully built python34 3.4.9-1 in a clean image (with testing repos enabled).

Updated checksums for 3.4.9 would be

diff --git a/PKGBUILD b/PKGBUILD
index c606f3c..1854eb6 100644
--- a/PKGBUILD
+++ b/PKGBUILD
@@ -1,5 +1,5 @@
 pkgname=python34
-pkgver=3.4.8
+pkgver=3.4.9
 pkgrel=1
 _pybasever=3.4
 _pymajver=3
@@ -12,7 +12,7 @@ makedepends=('tk' 'sqlite' 'valgrind' 'bluez-libs' 'mpdecimal')
 optdepends=('tk: for tkinter' 'sqlite')
 options=('!makeflags')
 source=(http://www.python.org/ftp/python/${pkgver}/Python-${pkgver}.tar.xz)
-sha256sums=('29a472fa902c7b2add152f5e1e82e0885a8d360645689c1db5d1949a7e8ac3ea')
+sha256sums=('59629676ba2b01a798f5211d8f63c26ee52f1d5133cf37583e0bf1bad50c2bd9')
 # Maintainer: Raphael Michel <mail@raphaelmichel.de>
 # Based on python33 script from: Rodolphe Breard <packages@what.tf> 
 # and Christopher Arndt <chris@chrisarndt.de>

Among the warnings by namcap for this package are a few which I think are valid:

python34 E: Dependency mpdecimal detected and not included (libraries ['usr/lib/libmpdec.so.2'] needed in files ['usr/lib/python3.4/lib-dynload/_decimal.cpython-34m.so'])
python34 E: Dependency xz detected and not included (libraries ['usr/lib/liblzma.so.5'] needed in files ['usr/lib/python3.4/lib-dynload/_lzma.cpython-34m.so'])

Thanks @ftschindler, I uploaded a version without that dependency.

hardening-wrapper is not available any more, and is supposedly also not required any more.

New version uploaded, builds for me and ssl module works.